Package limn.graphics

Class TextRulers

java.lang.Object

limn.graphics.TextRulers

public final class TextRulers
extends Object

Process-wide TextRuler registry, installed by the running backend (mirrors the Ui facade lifecycle). Scenes pick it up by default; anything can override locally for tests.

The backend's ruler measures through unsynchronized font caches and is therefore UI thread only (enforced). Precompute text metrics off thread via Ui.async handing the result back, not by measuring there.

Method Summary

Modifier and Type	Method	Description
static TextRuler	get()
static void	install(TextRuler ruler)	Installs the backend's ruler (called once at backend startup).
static void	uninstall(TextRuler ruler)	Resets to TextRuler.NONE (backend shutdown).

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

install

public static void install(TextRuler ruler)

Installs the backend's ruler (called once at backend startup).

uninstall

public static void uninstall(TextRuler ruler)

Resets to TextRuler.NONE (backend shutdown).

get

public static TextRuler get()

Returns:

the installed ruler (never null; TextRuler.NONE without a backend)